Drop %post chown rpcuser /var/lib/nfs/statd
    
    Digging through the git history quickly, this seems to be a workaround
    for an ancient upgrade issue.  We really shouldn't be
    doing this on new installs, and really not on on every upgrade either.
    
    The particular reason I'm making this change is that rpm-ostree
    explicitly errors out when scripts fail (because we can), and this
    will fail in an rpm-ostree environment as the real `/var` is not accessible
    to scripts.
    
    More information:
    
     - https://ostree.readthedocs.io/en/latest/manual/adapting-existing/
     - https://bugzilla.redhat.com/show_bug.cgi?id=1352154